<template>
  <div class="imgCropper">
    <a-modal v-model="visiable">
      <div class="cropper-content">
        <div class="cropper-box">
          <div class="cropper">
            <vue-cropper
              ref="cropper"
              :img="option.img"
              :outputSize="option.outputSize"
              :outputType="option.outputType"
              :info="option.info"
              :canScale="option.canScale"
              :autoCrop="option.autoCrop"
              :autoCropWidth="option.autoCropWidth"
              :autoCropHeight="option.autoCropHeight"
              :fixed="option.fixed"
              :fixedNumber="option.fixedNumber"
              :full="option.full"
              :fixedBox="option.fixedBox"
              :canMove="option.canMove"
              :canMoveBox="option.canMoveBox"
              :original="option.original"
              :centerBox="option.centerBox"
              :height="option.height"
              :infoTrue="option.infoTrue"
              :maxImgSize="option.maxImgSize"
              :enlarge="option.enlarge"
              :mode="option.mode"
              @realTime="realTime"
              @imgLoad="imgLoad"
            >
            </vue-cropper>
          </div>
          <!--底部操作工具按钮-->
          <div class="footer-btn">
            <div class="scope-btn">
              <label class="btn" id="btn" for="uploads" @click="showFileModal">选择图片</label>
            </div>
            <div class="upload-btn">
              <a-button type="success" @click="uploadImg('blob')">确认裁剪 <i class="el-icon-upload"></i></a-button>
            </div>
          </div>
        </div>
      </div>
      <input
        type="file"
        id="uploads"
        style="position: absolute; clip: rect(0 0 0 0)"
        accept="image/png, image/jpeg, image/gif, image/jpg"
        @change="selectImg($event)"
      />
      <template slot="footer"><div></div></template>
    </a-modal>
  </div>
</template>

<script>
import { VueCropper } from 'vue-cropper'
import { postAction } from '../../../api/manage'
export default {
  name: 'CropperImage',
  components: {
    VueCropper,
  },
  props: ['Name'],
  data() {
    return {
      visiable: false,

      name: this.Name,
      previews: {},
      option: {
        img: '', //裁剪图片的地址
        outputSize: 1, //裁剪生成图片的质量(可选0.1 - 1)
        outputType: 'jpeg', //裁剪生成图片的格式（jpeg || png || webp）
        info: true, //图片大小信息
        canScale: true, //图片是否允许滚轮缩放
        autoCrop: true, //是否默认生成截图框
        autoCropWidth: 304, //默认生成截图框宽度
        autoCropHeight: 240, //默认生成截图框高度
        fixed: false, //是否开启截图框宽高固定比例
        fixedNumber: [1.26, 1], //截图框的宽高比例
        full: true, //false按原比例裁切图片，不失真
        fixedBox: true, //固定截图框大小，不允许改变
        canMove: false, //上传图片是否可以移动
        canMoveBox: true, //截图框能否拖动
        original: false, //上传图片按照原始比例渲染
        centerBox: false, //截图框是否被限制在图片里面
        height: false, //是否按照设备的dpr 输出等比例图片
        infoTrue: false, //true为展示真实输出图片宽高，false展示看到的截图框宽高
        maxImgSize: 3000, //限制图片最大宽度和高度
        enlarge: 1, //图片根据截图框输出比例倍数
        mode: '304px 240px', //图片默认渲染方式
      },
    }
  },
  mounted() {},
  methods: {
    showFileModal() {
      document.querySelector('#uploads').click()
    },
    show() {
      this.visiable = true

      setTimeout(() => {
        this.showFileModal()
      }, 100)
    },
    //初始化函数
    imgLoad(msg) {
      console.log('工具初始化函数=====' + msg)
    },
    //图片缩放
    changeScale(num) {
      num = num || 1
      this.$refs.cropper.changeScale(num)
    },
    //向左旋转
    rotateLeft() {
      this.$refs.cropper.rotateLeft()
    },
    //向右旋转
    rotateRight() {
      this.$refs.cropper.rotateRight()
    },
    //实时预览函数
    realTime(data) {
      this.previews = data
    },
    //选择图片
    selectImg(e) {
      let file = e.target.files[0]
      if (!/\.(jpg|jpeg|png|JPG|PNG)$/.test(e.target.value)) {
        this.$message.warning('图片类型要求：jpeg、jpg、png')
        return false
      }
      //转化为blob
      let reader = new FileReader()
      reader.onload = (e) => {
        let data
        if (typeof e.target.result === 'object') {
          data = window.URL.createObjectURL(new Blob([e.target.result]))
        } else {
          data = e.target.result
        }
        this.option.img = data
      }
      //转化为base64
      reader.readAsDataURL(file)
    },
    //上传图片
    uploadImg(type) {
      let _this = this
      if (type === 'blob') {
        //获取截图的blob数据
        this.$refs.cropper.getCropBlob(async (data) => {
          console.log('data', data)
          if (data.size > 1024 * 1024 * 5) {
            this.$message.warning('截取的图片超过文件最大限制，请重新选择图片')
            return
          }
          //图片上传
          let formData = new FormData()
          formData.append('file', data, new Date().getTime() + '.jpg')
          console.log('formData', formData)
          let res = await postAction('/sys/common/upload', formData)
          console.log('res', res)
          if (res.success) {
            this.$emit('getImgSrc', res.message)
            this.visiable = false
          } else {
            this.$message.warning(res.message)
          }
        })
      }
    },
  },
}
</script>

<style scoped lang="scss">
.cropper-content {
  display: flex;
  display: -webkit-flex;
  justify-content: flex-end;
  margin-top: 40px;
  .cropper-box {
    flex: 1;
    width: 100%;
    .cropper {
      width: auto;
      height: 300px;
    }
  }

  .show-preview {
    flex: 1;
    -webkit-flex: 1;
    display: flex;
    display: -webkit-flex;
    justify-content: center;
    .preview {
      overflow: hidden;
      border: 1px solid #67c23a;
      background: #cccccc;
    }
  }
}
.footer-btn {
  margin-top: 30px;
  display: flex;
  display: -webkit-flex;
  justify-content: space-between;
  .scope-btn {
    display: flex;
    display: -webkit-flex;
    justify-content: space-between;
    padding-right: 10px;
  }
  .upload-btn {
    // flex: 1;
    // -webkit-flex: 1;
    display: flex;
    display: -webkit-flex;
    justify-content: center;
  }
  .btn {
    outline: none;
    display: inline-block;
    line-height: 1;
    white-space: nowrap;
    cursor: pointer;
    -webkit-appearance: none;
    text-align: center;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    outline: 0;
    -webkit-transition: 0.1s;
    transition: 0.1s;
    font-weight: 500;
    padding: 8px 15px;
    font-size: 12px;
    border-radius: 3px;
    color: #fff;
    background-color: #409eff;
    border-color: #409eff;
    margin-right: 10px;
  }
}
</style>
<style lang="scss">
.imgCropper {
  ::v-deep.ant-modal-root .ant-modal-content .ant-modal-footer {
    display: none !important;
    border: 1px solid red;
  }
}
</style>
